TY - GEN
T1 - Novel Active Clamping Step-Down DC-DC Converter with Lower Voltage Stress
AU - Hsu, Chi Hsuan
AU - Jian, Jun Min
AU - Chen, Jiann-Fuh
AU - Liao, Hsuan
PY - 2018/10/22
Y1 - 2018/10/22
N2 - In this paper, a novel ZVS buck converter with lower voltage stress based on coupled-inductor and active clamp techniques has been proposed. This converter utilizes coupled-inductor to obtain higher step-down ratio than the conventional buck converter. Moreover, the proposed converter can achieve ZVS (Zero-voltage switching) on both switches from full load to extra-light load. Therefore, the efficiency at light load does not subject to the switching losses, which leads to higher overall efficiency.The ZVS conditions and the design considerations of proposed converter are described. The ZVS region can cover the full load range, if the value of the magnetic inductance and resonant inductance have been properly chosen. Finally, based on controller TMS320F28035, a converter with 156 V input voltage, 48 V output voltage, and 200 W output power is developed to prove the feasibility of the proposed converter. The highest efficiency is around 96.8% when operating at 125 W.
AB - In this paper, a novel ZVS buck converter with lower voltage stress based on coupled-inductor and active clamp techniques has been proposed. This converter utilizes coupled-inductor to obtain higher step-down ratio than the conventional buck converter. Moreover, the proposed converter can achieve ZVS (Zero-voltage switching) on both switches from full load to extra-light load. Therefore, the efficiency at light load does not subject to the switching losses, which leads to higher overall efficiency.The ZVS conditions and the design considerations of proposed converter are described. The ZVS region can cover the full load range, if the value of the magnetic inductance and resonant inductance have been properly chosen. Finally, based on controller TMS320F28035, a converter with 156 V input voltage, 48 V output voltage, and 200 W output power is developed to prove the feasibility of the proposed converter. The highest efficiency is around 96.8% when operating at 125 W.
UR - http://www.scopus.com/inward/record.url?scp=85057317960&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85057317960&partnerID=8YFLogxK
U2 - 10.23919/IPEC.2018.8507610
DO - 10.23919/IPEC.2018.8507610
M3 - Conference contribution
AN - SCOPUS:85057317960
T3 - 2018 International Power Electronics Conference, IPEC-Niigata - ECCE Asia 2018
SP - 2653
EP - 2659
BT - 2018 International Power Electronics Conference, IPEC-Niigata - ECCE Asia 2018
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 8th International Power Electronics Conference, IPEC-Niigata - ECCE Asia 2018
Y2 - 20 May 2018 through 24 May 2018
ER -